Thermal Energy (OCR GCSE Physics A, Combined (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
15 questions from this quiz
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Practise the questions
15 questions from this quiz
When does heat transfer occur between two areas?
When does heat transfer occur between two areas?
When there is a temperature difference
Which direction does thermal energy naturally flow?
Which direction does thermal energy naturally flow?
From higher to lower temperature
What are the three main methods of heat transfer?
What are the three main methods of heat transfer?
Conduction, convection, radiation
Through which state of matter does conduction transfer thermal energy?
Through which state of matter does conduction transfer thermal energy?
Solids
Why does conduction occur in solids?
Why does conduction occur in solids?
Particles are tightly packed together
What happens to particles in a solid when it is heated?
What happens to particles in a solid when it is heated?
They vibrate more vigorously
Why are metals excellent conductors of heat?
Why are metals excellent conductors of heat?
They have free electrons carrying energy
Through which states of matter does convection transfer heat?
Through which states of matter does convection transfer heat?
Liquids and gases
What happens to a fluid when it is heated?
What happens to a fluid when it is heated?
It expands and becomes less dense
How does warmer fluid behave in convection?
How does warmer fluid behave in convection?
Less dense fluid rises
How does radiation transfer heat?
How does radiation transfer heat?
Through electromagnetic waves
Does radiation require a medium to transfer heat?
Does radiation require a medium to transfer heat?
No, it can occur in a vacuum
How does temperature affect the radiation emitted by an object?
How does temperature affect the radiation emitted by an object?
Hotter objects emit more radiation
Why is air a poor conductor of heat?
Why is air a poor conductor of heat?
Its particles are far apart
How does double glazing reduce heat transfer?
How does double glazing reduce heat transfer?
Traps air between two panes of glass